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I have a headless Raspberry Pi 2 model B and my goal is to maximise the heat output from the CPU/GPU IC.

I've successfully maxed the 4-core CPU by running 4 instances of:

yes > /dev/null &

Is there a CLI command that will do a similar job for maximising the GPU usage? I want something that will run until I choose to kill it from the CLI too.

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  • I'd imagine that running an OpenGL benchmarking suite (or a particular test from such a suite in a repeat loop) would be quite stressful on the GPU, but I'm not sure if that would work in parallel with the way you are maxing out the CPU (i.e. you might need something that runs ONLY on the GPU). Have you looked into this?
    – Phil B.
    Commented Oct 5, 2015 at 1:49
  • No, and that's exactly what I'd like to learn about. I've exausted my googling skills and haven't found anything.
    – ktorn
    Commented Oct 5, 2015 at 2:30
  • Have you looked at any of these? howtoforge.com/tutorial/linux-gpu-benchmark . I haven't tried these on an rPi yet, but I did use the first two on ubuntu.
    – Phil B.
    Commented Oct 5, 2015 at 2:33
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    Just out of curiosity what is the purpose of this experiment? there are better ways to toast marshmallows for smores. Commented Oct 5, 2015 at 4:20
  • @SteveRobillard I'm conducting an experiment along the lines of: wired.com/2015/03/stealing-data-computers-using-heat
    – ktorn
    Commented Oct 5, 2015 at 7:57

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